METHOD OF PRODUCING amp;alpha;,amp;bgr;-UNSATURATED ALDEHYDE AND/OR amp;alpha;,amp;bgr;-UNSATURATED CARBOXYLIC ACID

摘要

The present invention , from the alcohol in a liquid , - unsaturated aldehyde and / or , - unsaturated to provide a method for producing a carboxylic acid in a simplified process for the purpose . In the present invention , in the liquid phase , in the presence of molecular oxygen and a noble metal -containing catalyst , at 110 ~ 250 , by dehydration and oxidation of the alcohol , , - unsaturated aldehyde and / or , - unsaturated carboxylic acid are prepared . Or , in liquid phase , molecular oxygen , in the presence of a noble metal -containing catalyst , and an acidic substance , by dehydration and oxidation of the alcohol , , - unsaturated aldehyde and / or , - unsaturated carboxylic acid are prepared .